3: Percentage Calculations in Business 53
Sharing Variables Between Menus
If you compare the MU%C menu and the MU%P menus, you’ll see that
they have two menu labels in common ––
)
and
*
.
COST
COST
Shared variables
%CHG
PRICE
PRICE
%TOTL
M%C
M%P
MU%C MU%P
The calculator keeps track of the values you key in according to those
labels. For example, if you key in COST and PRICE in the MU%C menu,
exit to the BUS menu, and then display the MU%P menu, the calculator
retains those values. In other words, the variables are
shared
between
the two menus.
Example: Using Shared Variables. A food cooperative buys cases of
canned soup with an invoice cost of $9.60 per case. If the co-op
routinely uses a 15% markup on cost, for what price should it sell a case
of soup?
Keys: Display: Description:
#
(
" Displays MU%C menu.
9.6
)
7EF:8,&'(" Stores 9.60 in COST.
15
+
012345678#.&((" Stores 15% in M%C.
*
52;7H8##&(+" Calculates retail price.
What is the markup on price? Switch menus but keep the same COST
and PRICE.
e
L
" Exits MU%C menu and
displays MU%P menu.
6
012345658#%&(+" Calculates markup as a
percent of price.
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